Three-chamber RTO fuel supplementing system

The utility model belongs to the technical field of organic waste gas treatment, and particularly relates to a three-chamber RTO fuel supplementing system which comprises a heat storage oxidation furnace, a natural gas header pipe, a waste gas conveying pipe and a discharging pipeline, and an air mixing chamber is arranged on the waste gas conveying pipe and communicates with the natural gas header pipe through a natural gas branch pipe; an air inlet pipe is further arranged on the air mixing chamber, and air is communicated with the air mixing chamber through the air inlet pipe. The air mixing chamber used for supplementing air or natural gas into the workshop waste gas is arranged on the waste gas conveying pipeline, the VOC concentration in the workshop waste gas can be adjusted through the air mixing chamber, full reaction of organic waste gas in the heat storage oxidation furnace is guaranteed, the fuel utilization rate is increased, and the energy consumption is reduced. The risk that the heat accumulat